My vet did a uterine culture on my mare per the stallion owner's request. He said she had E. Coli and we have treated her for it for the past two days. I visited this site to learn more about it and now I am very concerned because he did not do a cytology. The results of the culture came back in two phases. The first result simply identified that an infection was present. The second result indicated that the infection was "large." The vet treated my mare with a lavage and an infustion day before yesterday followed up with three shots. Yesterday she got another infusion and three more injections. She is just coming out of heat and we decided to clean her up now while her cervix is still partly open. I watched the lavage and the liquid that was coming out looked clear to me (I don't know if that is significant).
I am very worried that we may have caused a problem where there was not one. She has good hind end conformation and has never needed caslicks. She does seem to benefit from lavages to hold her pregnancy after being bred. I have only one chance to get this mare to conceive before the stallion's breeding season ends July 30, as this mare is a substitute for another mare that did not get in foal.
e-Coli is found in manure. It is one of the most common contaminants of uterine swabs. You are right to show concern that the diagnosis was erroneous and that what was identified as a supposed pathogen was in fact only a contaminant.
Success lavaging post-breeding may not be associated with any acterial problems, in fact is unlikely to be, but is more likely to be associated with elayed uterine clearance issues with the mare.
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